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Martin Ressaar
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martin.ressaar
GeoGebra
New Resources
The Wallace-Simson Line, the Orthopole, and the Deltoid
Sets and LCM of Two Numbers
直線的斜率:水平變化和鉛垂變化
bewijs stelling van Pythagoras
Multiplying 2-Digit x 2-Digit Numbers Using an Area Model (2)
Discover Resources
Banks, Miles Equilateral Triangle
Forum_ 33205_B_Water Bottle Project02
Alternate Exterior Angles
Investigation 2
Centroid
Demo: Transparent text
Discover Topics
Integral Calculus
Optimization Problems
Triangles
Ratios
Conditional Probability